US20100290329A1 - Conductive paths in a hard disk drive enclosure - Google Patents
Conductive paths in a hard disk drive enclosure Download PDFInfo
- Publication number
- US20100290329A1 US20100290329A1 US12/467,176 US46717609A US2010290329A1 US 20100290329 A1 US20100290329 A1 US 20100290329A1 US 46717609 A US46717609 A US 46717609A US 2010290329 A1 US2010290329 A1 US 2010290329A1
- Authority
- US
- United States
- Prior art keywords
- tab
- cover
- base plate
- contact surface
- hard disk
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
- G11B33/12—Disposition of constructional parts in the apparatus, e.g. of power supply, of modules
- G11B33/121—Disposition of constructional parts in the apparatus, e.g. of power supply, of modules the apparatus comprising a single recording/reproducing device
- G11B33/122—Arrangements for providing electrical connections, e.g. connectors, cables, switches
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/4806—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed specially adapted for disk drive assemblies, e.g. assembly prior to operation, hard or flexible disk drives
- G11B5/4846—Constructional details of the electrical connection between arm and support
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
Description
- At least one hard disk drive (HDD) is used in almost all computer system operations. In fact, most computing systems are not operational without some type of HDD to store the most basic computing information such as the boot operation, the operating system, the applications, and the like. In general, the HDD is a device which may or may not be removable, but without which the computing system will generally not operate.
- The HDD may be susceptible to interference during the reading and writing functionality undergone in normal operations. Such interference may come from electromagnetic interference or energy from radio frequencies. This interference may cause poor performance or failures in reading and writing data.
-
FIG. 1 is a block diagram of an HDD in accordance with embodiments of the present invention. -
FIG. 2 is a block diagram of a cover for a HDD in accordance with embodiments of the present invention. -
FIG. 3 is a block diagram of a cover for a HDD in accordance with embodiments of the present invention. -
FIG. 4 is a block diagram of an enclosure for a HDD in accordance with embodiments of the present invention. -
FIG. 5 is a flowchart of a method for manufacturing and assembling a hard disk drive with conductive paths in accordance with embodiments of the present invention. -
FIG. 6 is a flowchart of a method for shielding a hard disk drive in accordance with embodiments of the present invention. - Reference will now be made in detail to various embodiments of the present invention. While the invention will be described in conjunction with these embodiments, it should be understood that the described embodiments are not intended to limit the invention to these embodiments. On the contrary, the invention is intended to cover alternatives, modifications and equivalents, which may be included within the spirit and scope of the invention as described in the various embodiments and as defined by the appended claims.
- Furthermore, in the following description of embodiments, numerous specific details are set forth in order to provide a thorough understanding of various embodiments of the present invention. However, it will be recognized by one of ordinary skill in the art that embodiments of the present invention may be practiced without these specific details. In other instances, well known methods, procedures, components, and circuits have not been described in detail as not to unnecessarily obscure aspects of embodiments of the present invention.
- The discussion will begin with a brief overview of the present invention. The discussion will then focus on a HDD and components connected therewith. The discussion will then focus on embodiments of conductive paths in a hard disk drive enclosure.
- Embodiments of the present invention are for conductive paths in a hard disk drive enclosure. For example, in the operation of a HDD, electromagnetic interference and energy from radio frequencies can disrupt the operation of a HDD. The HDD can be shielded from electromagnetic interference and energy from radio frequencies. In one embodiment, this shielding is accomplished by creating electrically conductive paths through the HDD enclosure. Embodiments of the present invention create tabs connected to the cover of the HDD enclosure which contact surfaces of the base plate of the HDD enclosure. In one embodiment, the tabs of the cover deform upon contacting the surfaces of the base plate with a force. Such deforming ensures a constant contact between the tabs of the cover and the surfaces of the base plate. In one embodiment, the cover and base plate are constructed of electrically conductive metals. Thus when the tabs of the cover contact the surfaces of the base plate and deform, electrically conductive paths are formed. These paths, in one embodiment, create the physical properties necessary to shield the HDD from electromagnetic interference and provide immunity from the energy from radio frequencies.
- The basic HDD model includes a magnetic storage disk or hard disk that spins at a designed rotational speed. An actuator arm with a suspended slider is utilized to reach out over the disk. The slider has one or more magnetic read and write transducers or heads for reading and writing information to or from a location on the disk. The slider is mounted on a suspension which connects to the actuator arm. In the case of multiple platter drives, there can be multiple suspensions attaching to multiple actuator arms as components of a head stack assembly. The head stack assembly also includes a voice coil which is part of a motor used for moving the arms to a desired location on the disk(s).
- With reference now to
FIG. 1 , a schematic drawing of one embodiment of an information storage system including a magnetic hard disk file orHDD 110 for a computer system is shown, although only one head and one disk surface combination are shown. What is described herein for one head-disk combination is also applicable to multiple head-disk combinations. In other words, embodiments of the present technology are independent of the number of head-disk combinations. - In general, HDD 110 has an
outer housing 113 usually including a base portion (shown) and a top or cover (not shown). In one embodiment,housing 113 contains a disk pack having at least one media ormagnetic disk 138. The disk pack (as represented by disk 138) defines an axis of rotation and a radial direction relative to the axis in which the disk pack is rotatable. - A spindle motor assembly having a
central drive hub 130 operates as the axis and rotates thedisk 138 or disks of the disk pack in the radial direction relative tohousing 113. Anactuator assembly 140 includes one or moreactuator arms 145. When a number ofactuator arms 145 are present, they are usually represented in the form of a comb that is movably or pivotally mounted to base/housing 113. Acontroller 150 is also mounted tobase 113 for selectively moving theactuator arms 145 relative to thedisk 138.Actuator assembly 140 may be coupled with a connector assembly, such as a flex cable to convey data between arm electronics and a host system, such as a computer, wherein HDD 110 resides. - In one embodiment, each
actuator arm 145 has extending from it at least one cantilevered integrated lead suspension (ILS) 120. The ILS 120 may be any form of lead suspension that can be used in a data access storage device. The level of integration containing theslider 121,ILS 120, and read and write head is called the head stack assembly. - The ILS 120 has a spring-like quality, which biases or presses the air-bearing surface of
slider 121 againstdisk 138 to causeslider 121 to fly at a precise distance fromdisk 138. ILS 120 has a hinge area that provides for the spring-like quality, and a flexing cable-type interconnect that supports read and write traces and electrical connections through the hinge area. Avoice coil 112, free to move within a conventional voice coil motor magnet assembly is also mounted toactuator arms 145 opposite the head stack assemblies. Movement of theactuator assembly 140 causes the head stack assembly to move along radial arcs across tracks on the surface ofdisk 138.Memory device 122 is capable of storing electronic data that can be used in the operation ofHDD 110.Controller 150, and other components of HDD 110, has the ability to accessmemory device 122 to receive information, data, instruction or commands related to its operation. - Reference will now be made to
FIG. 2 , a block diagram of an example cover for a HDD enclosure that may be used as a component ofHDD 110 ofFIG. 1 .FIG. 2 depicts,cover 200,tabs thinner portion 220,short side 225,long side 230, and c-ring 235.FIG. 2 comprises components and portions of the present technology that may or may not be used with different embodiments of the present technology and should not be construed to limit the present technology. - In one embodiment,
cover 200 is comprised of a metal material that has electrically conductive properties. It should be appreciated thatcover 200 can be any number of metals including, but not limited to stainless steel. In one embodiment,tabs cover 200. In one embodiment,tabs cover 200. In one embodiment, cover 200 includingtabs tabs cover 200. It should be appreciated thatcover 200 includingtabs - In one embodiment,
cover 200 is substantially rectangular in shape having two short sides opposite of each other and two long sides opposite of each other. In one embodiment,short side 225 is one of the two short sides andlong side 230 is one of the two long sides. In one embodiment,cover 200 has an embossed or raised portion which forms c-ring 235. In one embodiment,cover 200 is coupled withHDD 110 ofFIG. 1 and c-ring 235 is located overmagnetic disk 138. In one embodiment, oncecover 200 is coupled with a HDD, the magnetic disk of the hard disk drive will be located closer to one of the two shorter sides ofcover 200.FIG. 2 depicts an embodiment in which c-ring 235 is located closer toshort side 225 than the short side opposite ofshort side 225. - In one embodiment,
cover 200 includes at least one tab such astab 215. In one embodiment,tab 215 is fabricated to include a length that is perpendicular toshort side 225. In one embodiment,tab 215 protrudes in a direction away fromshort side 225. In one embodiment,tab 215 is fabricated to be substantially coplanar withcover 200. In one embodiment,tab 215 comprises a substantially flat surface that is able to contact another metallic surface and form an electrically conductive path with the other electrically conductive surface. In one embodiment,tab 215 comprises a rounded surface that is able to contact another metallic surface and form an electrically conductive path with the other electrically conductive surface. In one embodiment, the surface oftab 215 is sloped relative to cover 200. In one embodiment,tab 215 includesthinner portion 220 which is composed of a thickness thinner than the remainder portion oftab 215. In one embodiment,thinner portion 220 is the portion oftab 215 which connectstab 215 to cover 200. In one embodiment,thinner portion 220 oftab 215 is formed using a stamping process. It should be appreciated that any combination of surfaces could be used fortab 305 and the contact surface of the base plate. For example, both could have a substantially flat surface, or one could have a rounded surface and the other a sloped surface. - In one embodiment,
cover 200 includes only two tabs for forming a conductive path. In one embodiment, tabs are fabricated intocover 200 in predetermined locations which cause the greatest effectiveness in providing shielding from electromagnetic interference and immunity from radio frequencies. In one embodiment,cover 200 includestabs short side 225 which is located closer to c-ring 235 than the other short side located opposite ofshort side 225. In one embodiment,tabs short side 225 and are positioned to divideshort side 225 into three lengths. In one embodiment,tabs short side 225 into three substantially equal lengths. - In one embodiment,
tab 215 is able to deform when in contact with another surface or point and a force is applied. It should be appreciated that such a force can be, but is not limited to, a pressure, an applied load or another type of force applied totab 215. In one embodiment, such a force is applied totab 215 whencover 200 is coupled with a base plate of a HDD enclosure. In one embodiment,cover 200 is coupled with a base plate of a HDD enclosure using screws which result in a force applied totab 215. In one embodiment,tab 215 deforms atthinner portion 220 which is the weakest portion oftab 215 because it is the thinnest portion oftab 215. In one embodiment,tab 215 permanently deforms past a yield point when a force is applied and is unable to return to its original shape once the force is no longer applied. It should be appreciated thatcover 200 may be removed if the HDD fails. In such an embodiment,cover 200, withtab 215 which has permanently deformed past a yield point, may be discarded as replaced with a new cover comprising tabs that have not yet been deformed. In one embodiment,tab 215 deforms a distance in a range substantially centered on four hundred microns from its original position relative to cover 200. - Reference will now be made to
FIG. 3 , a block diagram of an example cover for a HDD enclosure that may be used as a component ofHDD 110.FIG. 3 depicts,cover 300,tabs short side 315,long side 320, and c-ring 325.FIG. 3 comprises components and portions of the present technology that may or may not be used with different embodiments of the present technology and should not be construed to limit the present technology. - In one embodiment,
cover 300 is comprised of the same materials ascover 200 ofFIG. 2 . In one embodiment,tabs cover 300. In one embodiment,tabs cover 300. In one embodiment, cover 300 includingtabs tabs cover 300. It should be appreciated thatcover 300 includingtabs - In one embodiment,
cover 300 is substantially rectangular in shape having two short sides opposite of each other and two long sides opposite of each other. In one embodiment,short side 315 is one of the two short sides andlong side 320 is one of the two long sides. In one embodiment,cover 300 has an embossed or raised portion which forms c-ring 325. In one embodiment,cover 300 is coupled withHDD 110 ofFIG. 1 and c-ring 325 is located overmagnetic disk 138. In one embodiment, oncecover 300 is coupled with a HDD, the magnetic disk of the hard disk drive will be located closer to one of the two shorter sides ofcover 300.FIG. 3 depicts an embodiment in which c-ring 325 is located closer toshort side 315 than the short side opposite ofshort side 315. - In one embodiment,
cover 300 includes at least one tab such astab 305. In one embodiment,tab 305 is fabricated to include a length that is parallel toshort side 315. In one embodiment, a side oftab 305 forms a portion ofshort side 315 ofcover 300. In one embodiment,tab 305 is fabricated to be substantially coplanar withcover 305. In one embodiment,tab 305 comprises a substantially flat surface that is able to contact another metallic surface and form an electrically conductive path with the other electrically conductive surface. In one embodiment,tab 305 comprises a rounded surface that is able to contact another metallic surface and form an electrically conductive path with the other electrically conductive surface. In one embodiment, the surface oftab 305 is slopedrelative cover 300. In one embodiment, by using a substantially flat surface for bothtab 305 and a contact surface of a base plate, an electrically conductive path is ensured when the two substantially flat surfaces contact each other. It should be appreciated that any combination of surfaces could be used fortab 305 and the contact surface of the base plate. For example, both could have a substantially flat surface, or one could have a rounded surface and the other a sloped surface. - In one embodiment, tabs are fabricated into
cover 300 in predetermined locations which cause the greatest effectiveness in providing shielding from electromagnetic interference and immunity from radio frequencies. In one embodiment,cover 300 includes only two tabs for forming a conductive path. In one embodiment,cover 300 includestabs short side 315 which is located closer to c-ring 325 than the other short side located opposite ofshort side 315. In one embodiment,tabs short side 315 and are positioned to divideshort side 315 into three lengths. In one embodiment,tabs short side 315 into three substantially equal lengths. - In one embodiment,
tab 305 is able to deform when in contact with another surface or point and a force is applied. In one embodiment,tab 305 is deformed so that it is no longer coplanar withcover 300. It should be appreciated that such a force can be, but is not limited to, a pressure, an applied load or another type of force applied totab 305. In one embodiment, such a force is applied totab 305 whencover 300 is coupled with a base plate of a HDD enclosure. In one embodiment,cover 300 is coupled with a base plate of a HDD enclosure using screws which result in a force applied totab 305. In one embodiment,tab 305 permanently deforms past a yield point when a force is applied and is unable to return to its original shape once the force is no longer applied. In one embodiment,tab 305 deforms a distance in a range substantially centered on four hundred microns from its original position relative to cover 300. - In one embodiment,
tab 305 deforms when in contact with another surface or point and a force is applied but restores to a non-deformed shape once the force is no longer applied. In one embodiment,tab 305 is able to then deform again when in renewed contact with the other surface or point and a renewed force is applied. In one embodiment,tab 305 is able to restore to a non-deformed shape or an original shape becausetab 305 is not deformed past a yield point. In one embodiment,tab 305 is able to restore to a non-deformed shape or an original shape due to a restorative or spring force inherent in the material of whichtab 305 comprises. In one embodiment, the deformation is spread along the length oftab 305, thus iftab 305 is longer enough the deformation will not extendtab 305 past a yield point. In this manner,tab 305 is allowed more deflection before reaching a yield point. Thus,tab 305 is able to deform eachinstance cover 300 is coupled with a base plate of a HDD enclosure. In other words, cover 300 can be used more than once with the same effects as in the first use. - It should be appreciated that an embodiment that allows
cover 300 to be used more than once is desirable for a HDD that has failed and is in need of rework or repair. For example, a component part of a HDD may fail and must be replaced for the HDD to operate normally. In this example, cover 300 may be removed, the component replaced or repaired, and cover 300 is then replaced with the tabs deforming again upon renewed contact with the contact surfaces. In this manner, cover 300 does not need to be discarded each instance in which the HDD enclosure is disassembled and reassembled. - In one embodiment,
tab 305 is deformed after fabrication, but before coupling with a contact surface, to bendtab 305 so that it is not coplanar withcover 300. For example,tab 305 can be bent away fromcover 300 and in the direction in whichtab 305 will contact a contact surface of a base plate. Such deforming or bending in a direction toward a contact surface will ensure contact betweentab 305 and a contact surface of a base plate. - Reference will now be made to
FIG. 4 , a side view of a block diagram of an example cover and base plate for a HDD enclosure that may be used as components ofHDD 110.FIG. 4 depicts,cover 400,tab 405,base plate 410, andcontact surfaces FIG. 4 comprises components and portions of the present technology that may or may not be used with different embodiments of the present technology and should not be construed to limit the present technology. - In one embodiment,
cover 400 possesses characteristics similar to those described above forcover 200 ofFIG. 2 and cover 300 ofFIG. 3 . In one embodiment,tab 405 possesses characteristics similar to that oftab 305 ofFIG. 3 . - In one embodiment,
base plate 410 is comprised of a metal material that has electrically conductive properties. It should be appreciated thatbase plate 410 can be any number of metals including, but not limited to aluminum. In one embodiment, contact surfaces 415 and 420 are fabricated out of the same piece of metal asbase plate 410. In one embodiment, contact surfaces 415 and 420 exposed metal and are electrically conductive and form an electrically conductive path withbase plate 410. In one embodiment, contact surfaces 415 and 420 comprise substantially flat surfaces and are able to easily contact the flat surface of a tab of a cover such astab 405. It should be appreciated that the surfaces of contact surfaces of 415 and 420 can be any number of shapes including substantially flat surfaces, a rounded boss or surface, a sloped boss or surface, etc.FIG. 4 depicts an embodiment in which the substantially flat surfaces of contact surfaces 415 and 420 are raised surfaces that are different in height than the other surfaces ofbase plate 410. - In one embodiment,
base plate 410 is substantially rectangular in shape with two short sides opposite of each other similar to those described forcover 200 ofFIG. 2 and cover 300 ofFIG. 3 . In one embodiment,base plate 410 is designed couple withcover 400. In one embodiment,base plate 410 is coupled withmagnetic disk 138 ofFIG. 1 . In one embodiment,magnetic disk 138 is located closer to one of the two short sides ofbase plate 410. In one embodiment,base plate 410 has only twocontact surfaces base plate 410 closest tomagnetic disk 138. In one embodiment, contact surfaces 415 and 420 are located on one of the short sides ofbase plate 410. In one embodiment, contact surfaces 415 and 420 are positioned to divide one of the short sides ofbase plate 410 into three lengths. In one embodiment, contact surfaces 415 and 420 divide one of the short sides ofbase plate 410 into three substantially equal lengths. -
FIG. 4 depicts an embodiment in which cover 400 is in contact withbase plate 410. In one embodiment, this contact is made viatab 405 andcontact surface 415.FIG. 4 depicts an embodiment in whichtab 405 is deformed upon contactingcontact surface 415 with an applied force.Deformation point 425 depicts an embodiment in whichtab 405 has deformed relative to cover 400. - In one embodiment, at least one conductive path is formed which passes through
cover 400, the surface oftab 405, the surface ofcontact surface 415, andbase plate 410. In one embodiment, this conductive path provides shielding from a range of electromagnetic interference. In one embodiment, this conductive path provides immunity from energy from a range of radio frequencies. In one embodiment, the range of radio frequencies is frequencies which are less than two gigahertz. Thus at least one electrically conductive path is formed through a HDD enclosure. -
FIG. 5 is a flowchart ofmethod 500 for manufacturing and assembling a hard disk drive with conductive paths in accordance with embodiments of the present invention. - At 502, a base plate is fabricated to enclose the hard disk drive comprising at least one contact surface.
- At 504, a cover is fabricated to cover the base plate comprising at least one tab for contacting the at least one contact surface of the base plate, wherein the at least one tab of the cover is substantially coplanar with the cover. In one embodiment, the cover is fabricated using a stamping process.
- At 506, the at least one tab of the cover is aligned with the at least one contact surface of the base plate.
- At 508, the base plate is coupled with the cover using a force.
- At 510, the at least one tab of the cover is deformed upon contacting the at least one contact surface of the base plate with the force. In one embodiment, the at least one tab of the cover is deformed at a thinner portion of the at least one tab. In one embodiment, the at least one tab of the cover is deformed a range substantially centered on four hundred microns relative to the cover.
- At 512, in one embodiment, the at least one tab of the cover is permanently deformed past a yield point.
- At 514, in one embodiment, the base plate is uncoupled with the cover.
- At 516, in one embodiment, the at least one tab is restored to a non-deformed shape.
- At 518, in one embodiment, the base plate is re-coupled with the cover with a renewed force.
- At 520, in one embodiment, the at least one tab of the cover is re-deformed upon re-contacting the at least one contact surface of the base plate with the renewed force.
-
FIG. 6 is a flowchart ofmethod 600 for shielding a hard disk drive in accordance with embodiments of the present invention. - At 602, at least one tab of a cover is contacted with at least one contact surface of a base plate.
- At 604, the at least tab of the cover is deformed upon the contacting the at least one contact surface of the base plate by applying a force to the at least one tab of the cover.
- At 606, at least one electrically conductive path is formed surrounding the hard disk drive, wherein the at least one electrically conductive path passes through the at least one tab of the cover and through the at least one contact surface of the base plate.
- At 608, in one embodiment, operations of the hard disk drive are shielded from a range of electromagnetic interference contacting the at least one electrically conductive path.
- At 610, in one embodiment, operations of the hard disk drive are immunized from a range of radio frequencies contacting the at least one electrically conductive path. In one embodiment, the range of radio frequencies the hard disk drive is immunized from is less than two gigahertz.
- Thus, embodiments of the present invention provide an airflow diverter in a hard disk drive system.
- Example embodiments of the present technology are thus described. Although the subject matter has been described in a language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.
Claims (20)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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US12/467,176 US8228630B2 (en) | 2009-05-15 | 2009-05-15 | Conductive paths in a hard disk drive enclosure |
CN200910262173XA CN101887742A (en) | 2009-05-15 | 2009-12-25 | Conductive paths in a hard disk drive enclosure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US12/467,176 US8228630B2 (en) | 2009-05-15 | 2009-05-15 | Conductive paths in a hard disk drive enclosure |
Publications (2)
Publication Number | Publication Date |
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US20100290329A1 true US20100290329A1 (en) | 2010-11-18 |
US8228630B2 US8228630B2 (en) | 2012-07-24 |
Family
ID=43068422
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US12/467,176 Expired - Fee Related US8228630B2 (en) | 2009-05-15 | 2009-05-15 | Conductive paths in a hard disk drive enclosure |
Country Status (2)
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US (1) | US8228630B2 (en) |
CN (1) | CN101887742A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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US9595302B2 (en) * | 2014-04-17 | 2017-03-14 | Intri-Plex Technologies, Inc. | Hard disk drive cover with differential inner and outer surface roughness |
US9672870B1 (en) * | 2016-09-30 | 2017-06-06 | Western Digital Technologies, Inc. | Sealed bulkhead electrical feed-through X-Y positioning control |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5187621A (en) * | 1991-03-25 | 1993-02-16 | Quantum Corporation | RFI/EMI reduction for head and disk assembly |
US5448433A (en) * | 1990-12-19 | 1995-09-05 | Integral Peripherals | Disk drive information storage device with baseplate and cover having overlapping edge portions to provide protection from electromagnetic interference |
US6310747B1 (en) * | 1991-09-25 | 2001-10-30 | Mobile Storage Technology, Inc. | Method for reducing external signal interference with signals in a computer disk storage system |
US6388834B1 (en) * | 1999-05-07 | 2002-05-14 | Seagate Technology Llc | Grounding post to reduce EMI noise effects in disc drives |
US6661603B1 (en) * | 2001-09-28 | 2003-12-09 | Western Digital Technologies, Inc. | Disk drive including conductive path between disk drive base and cover through fastener support |
US20070201162A1 (en) * | 2006-02-10 | 2007-08-30 | Seagate Technology Llc | Tamper evident tape with integrated emi shielding |
US7364437B2 (en) * | 2005-08-04 | 2008-04-29 | Seagate Technology Llc | Electronic device housing |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6949706B2 (en) * | 2001-09-28 | 2005-09-27 | Siemens Information And Communication Mobile, Llc | Radio frequency shield for electronic equipment |
JP2004165552A (en) * | 2002-11-15 | 2004-06-10 | Toshiba Corp | Electronic apparatus |
CN2590124Y (en) * | 2002-11-23 | 2003-12-03 | 深圳易拓科技有限公司 | EMI prevent and casing sealing structure of disk drive |
-
2009
- 2009-05-15 US US12/467,176 patent/US8228630B2/en not_active Expired - Fee Related
- 2009-12-25 CN CN200910262173XA patent/CN101887742A/en active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5448433A (en) * | 1990-12-19 | 1995-09-05 | Integral Peripherals | Disk drive information storage device with baseplate and cover having overlapping edge portions to provide protection from electromagnetic interference |
US5187621A (en) * | 1991-03-25 | 1993-02-16 | Quantum Corporation | RFI/EMI reduction for head and disk assembly |
US6310747B1 (en) * | 1991-09-25 | 2001-10-30 | Mobile Storage Technology, Inc. | Method for reducing external signal interference with signals in a computer disk storage system |
US6388834B1 (en) * | 1999-05-07 | 2002-05-14 | Seagate Technology Llc | Grounding post to reduce EMI noise effects in disc drives |
US6661603B1 (en) * | 2001-09-28 | 2003-12-09 | Western Digital Technologies, Inc. | Disk drive including conductive path between disk drive base and cover through fastener support |
US7364437B2 (en) * | 2005-08-04 | 2008-04-29 | Seagate Technology Llc | Electronic device housing |
US20070201162A1 (en) * | 2006-02-10 | 2007-08-30 | Seagate Technology Llc | Tamper evident tape with integrated emi shielding |
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Publication number | Publication date |
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US8228630B2 (en) | 2012-07-24 |
CN101887742A (en) | 2010-11-17 |
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